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Influence of changing background on CHRIS/PROBA data over an heterogeneous canopy


Koetz, Benjamin; Kneubühler, Mathias; Schopfer, Jürg; Schaepman, Michael E; Itten, Klaus I (2005). Influence of changing background on CHRIS/PROBA data over an heterogeneous canopy. In: 4th EARsel workshop on Imaging Spectroscopy, Warsaw, Poland, 27 April 2005 - 30 April 2005, 237-245.

Abstract

The spaceborne ESA-mission CHRIS-Proba (Compact High Resolution Imaging Spectrometer-Project for On-Board Autonomy) provides hyperspectral and multi-directional data of selected targets spread over the world. While the spectral information content of CHRIS/Proba data is able to assess the biochemistry of a vegetation canopy, the directional information can describe the structure of an observed canopy. In this study we proposed to demonstrate the effects of changing background on the hemispherical-directional reflectance factor (HDRF) of a coniferous forest based on a multi-temporal CHRIS-Proba data set (summer / winter scene) over the Swiss National Park. However, the data status of the CHRIS-Proba observations did only allow for an appropriate pre-processing of the summer scene. Instead the complex 3-D radiative transfer model FLIGHT was employed to assess the influence of changing background (understory vs. snow) within a forest canopy. The study shows the enhanced potential of the directional and spectral information content of CHRIS/Proba for mapping heterogeneous canopies using a multi-temporal data set.

Abstract

The spaceborne ESA-mission CHRIS-Proba (Compact High Resolution Imaging Spectrometer-Project for On-Board Autonomy) provides hyperspectral and multi-directional data of selected targets spread over the world. While the spectral information content of CHRIS/Proba data is able to assess the biochemistry of a vegetation canopy, the directional information can describe the structure of an observed canopy. In this study we proposed to demonstrate the effects of changing background on the hemispherical-directional reflectance factor (HDRF) of a coniferous forest based on a multi-temporal CHRIS-Proba data set (summer / winter scene) over the Swiss National Park. However, the data status of the CHRIS-Proba observations did only allow for an appropriate pre-processing of the summer scene. Instead the complex 3-D radiative transfer model FLIGHT was employed to assess the influence of changing background (understory vs. snow) within a forest canopy. The study shows the enhanced potential of the directional and spectral information content of CHRIS/Proba for mapping heterogeneous canopies using a multi-temporal data set.

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Additional indexing

Item Type:Conference or Workshop Item (Paper), not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Event End Date:30 April 2005
Deposited On:08 Jul 2014 15:14
Last Modified:08 Dec 2017 06:18
Publisher:s.n.
ISBN:83-89502-02-X
Additional Information:Proceedings of 4th EARSeL Workshop on Imaging Spectroscopy (2005)
Free access at:Official URL. An embargo period may apply.
Related URLs:http://www.earsel.org/workshops/IS_Warsaw_2005/html/papers.htm

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